Finding the Fourth Proportional to 1,921.02, 2,651.10 and 1,081.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,921.02 : 2,651.10 = 1,081.71 : x
2. Step 2: Convert to fraction form
   1,921.02/2,651.10 = 1,081.71/x
3. Step 3: Cross multiply
   1,921.02x = 2,651.10 × 1,081.71
4. Step 4: Simplify right side
   1,921.02x = 2,867,721.38
5. Step 5: Solve for x
   x = 2,867,721.38/1,921.02
6. Step 6: Final answer
   x = 1,492.81